Federal Agents Search Spine-Surgery Center

Federal agents are looking into fraud allegations at companies owned by Michael D. Drobot, a hospital executive who built a Southern California business empire centered on treating spine injuries suffered by workers' compensation patients.

Last week, Federal Bureau of Investigation and Internal Revenue Service agents conducted searches at the companies as part of a fraud investigation by the U.S. attorney for the Central District of California, said Laura Eimiller, a spokeswoman for the FBI's Los Angeles field office. She...